Cathode ray storage tube having a target dielectric provided with particulate segments of collector electrode extending therethrough
AssigneeTektronix, Inc.
InventorsGerald E. McTeague, Kenneth R. Stinger
Life of this patent
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Abstract
A cathode ray storage tube provided with a storage target having a multiplicity of segments of the collector electrode extending through the dielectric layer of the storage target. These segments comprise dots or continuous or broken protrusions of conductive particles that have been photo-deposited into position onto the collector electrode and then the storage dielectric layer is applied thereover which has proper thickness so that the segments extend above the dielectric thereby providing collector areas for collecting secondary emitted electrons from the dielectric.
Claims16
A cathode ray storage tube comprising:
- an insulative support member having a conductive layer on an inside surface of said support member, said inside surface being smooth and nonanomalous;
- connection means for providing said conductive layer with a predetermined voltage level;
- a dielectric layer for storing a charge pattern, said layer being located on one side of said conductive layer;
- a multiplicity of spaced conductive collector electrodes in the form of particulate material having inner ends connected to said conductive layer, said collector electrodes extending from said conductive layer through said dielectric layer at least to an opposite side thereof to provide an equipotential surface on said opposite side of said dielectric layer at substantially the same voltage level as said conductive layer, said dielectric layer being substantially continuous except where interrupted by said collector electrodes;
- and
- means for emitting electrons toward and onto the opposite side of said dielectric layer for establishing said charge pattern on said dielectric layer and for directing low velocity electrons at said opposite side for driving selected areas of said dielectric layer toward one of two stable potentials to retain said charge pattern thereon.
A storage target for a cathode ray tube having an envelope and an insulative support member sealingly secured onto one end of said envelope, a conductive layer on the inside surface of the insulative support member which is to be connected to a predetermined voltage level and a dielectric layer for storing a charge pattern thereon disposed on the conductive layer, means in said envelope for emitting high speed electrons toward and onto said dielectric layer for establishing said charge pattern on said dielectric layer and for directing low velocity electrons toward and onto said dielectric layer for driving selected areas of said dielectric layer toward one of two stable potentials to retain said charge pattern thereon, the improvement comprising a multiplicity of spaced conductive collector electrodes in the form of particulate material having inner ends connected to said conductive layer, said conductive layer being smooth and nonanomalous, said collector electrodes extending from said conductive layer through said dielectric layer at least to an opposite side thereof to provide an equipotential surface on said opposite side of said dielectric layer at substantially the same voltage level as said conductive layer, said dielectric layer being substantially continuous except where interrupted by said collector electrodes.
Dependencies are inferred from the claim text.